/*
 * FiltroLogin.java
 *
 * Created on July 7, 2007, 4:27 PM
 */
package filtro;

import entidad.Usuario;
import java.io.*;
import javax.naming.Context;
import javax.servlet.http.*;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import wasolicitudesfiec.authentication.AuthenticationPhaseListener;
import wasolicitudesfiec.logicacontrol.Logica;

/**
 *
 * @author  kabad
 * @version
 */
public class FiltroLogin implements Filter {

    // The filter configuration object we are associated with.  If
    // this value is null, this filter instance is not currently
    // configured.
    private FilterConfig filterConfig = null;
    private Usuario usuario;

    public FiltroLogin() {
        System.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.rmi.registry.RegistryContextFactory");
    }
    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
            throws IOException, ServletException {

        HttpSession session;
        HttpServletRequest req;
        if (debug) {
            log("FiltroLogin:DoBeforeProcessing");
        }
        req = (HttpServletRequest) request;
req.setAttribute("path", filterConfig.getInitParameter("path"));
Logica.setRealPath(getFilterConfig().getServletContext().getRealPath("/"));

            
            session = req.getSession();
            usuario=(Usuario) session.getAttribute(AuthenticationPhaseListener.USER_SESSION_KEY);
            
            if (usuario!=null){
            Logica logica = new Logica();
            logica.autentica(usuario.getUsuario(), usuario.getPassword());
            }
            
            return;

    }

    /**
     *
     * @param request The servlet request we are processing
     * @param result The servlet response we are creating
     * @param chain The filter chain we are processing
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet error occurs
     */
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain)
            throws IOException, ServletException {

        if (debug) {
            log("FiltroLogin:doFilter()");
        }
        doBeforeProcessing(request, response);

        Throwable problem = null;

        try {
               chain.doFilter(request, response);
        } catch (Throwable t) {
            //
            // If an exception is thrown somewhere down the filter chain,
            // we still want to execute our after processing, and then
            // rethrow the problem after that.
            //
            problem = t;
            t.printStackTrace();
        }
        //
        // If there was a problem, we want to rethrow it if it is
        // a known type, otherwise log it.
        //
        if (problem != null) {
            if (problem instanceof ServletException) {
                throw (ServletException) problem;
            }
            if (problem instanceof IOException) {
                throw (IOException) problem;
            }
            sendProcessingError(problem, response);
        }
    }

    /**
     * Return the filter configuration object for this filter.
     */
    public FilterConfig getFilterConfig() {
        return (this.filterConfig);
    }

    /**
     * Set the filter configuration object for this filter.
     *
     * @param filterConfig The filter configuration object
     */
    public void setFilterConfig(FilterConfig filterConfig) {

        this.filterConfig = filterConfig;
    }

    /**
     * Destroy method for this filter
     *
     */
    public void destroy() {
    }

    /**
     * Init method for this filter
     *
     */
    public void init(FilterConfig filterConfig) {

        this.filterConfig = filterConfig;
        if (filterConfig != null) {
            if (debug) {
                log("FiltroLogin:Initializing filter");
            }
        }
    }

    /**
     * Return a String representation of this object.
     */
    public String toString() {

        if (filterConfig == null) {
            return ("FiltroLogin()");
        }
        StringBuffer sb = new StringBuffer("FiltroLogin(");
        sb.append(filterConfig);
        sb.append(")");
        return (sb.toString());

    }

    private void sendProcessingError(Throwable t, ServletResponse response) {

        String stackTrace = getStackTrace(t);

        if (stackTrace != null && !stackTrace.equals("")) {

            try {

                response.setContentType("text/html");
                PrintStream ps = new PrintStream(response.getOutputStream());
                PrintWriter pw = new PrintWriter(ps);
                pw.print("<html>\n<head>\n<title>Error</title>\n</head>\n<body>\n"); //NOI18N

                // PENDING! Localize this for next official release
                pw.print("<h1>The resource did not process correctly</h1>\n<pre>\n");
                pw.print(stackTrace);
                pw.print("</pre></body>\n</html>"); //NOI18N
                pw.close();
                ps.close();
                response.getOutputStream().close();
                ;
            } catch (Exception ex) {
            }
        } else {
            try {
                PrintStream ps = new PrintStream(response.getOutputStream());
                t.printStackTrace(ps);
                ps.close();
                response.getOutputStream().close();
                ;
            } catch (Exception ex) {
            }
        }
    }

    public static String getStackTrace(Throwable t) {

        String stackTrace = null;

        try {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            t.printStackTrace(pw);
            pw.close();
            sw.close();
            stackTrace = sw.getBuffer().toString();
        } catch (Exception ex) {
        }
        return stackTrace;
    }

    public void log(String msg) {
        filterConfig.getServletContext().log(msg);
    }
    private static final boolean debug = true;
}
